1 thought on “Is 999 a full gold or a thousand foot gold?”
Felicia
999 is thousands of gold. 999 on the golden steel print refers to the gold content of this gold 99.9%. 999 gold is also called thousands of gold, and it is the highest value named after the national standard. In addition to 999, its steel printing label also includes thousands of gold, GOLD999, G999 and so on. Due to the high purity of 999 gold, the color is red yellow, and the texture is very soft, it has good ductility, but the plasticity of 999 gold is poor and prone to deformation. The test method 1, identification
The jewelry marks should contain the manufacturer code, the name and content of the precious metal material. 2, jewelry weight The gold jewelry is calculated according to the weight and processing fee. The weight of the jewelry is one of the important indicators. The difference is 0.01g. 3, gold content has many types of gold content testing methods, which can be divided into chemical analysis methods and instrument analysis methods. The whether the jewelry is damaged according to whether the jewelry is damaged during the testing process can also be divided into non -destructive testing method and damage testing method. The daily inspection of the jewelry quality supervision department is generally based on non -destructive testing method. , Analysis of large instruments such as electronic probes. Market supervision random inspections are mainly due to loss of detection. The fire test method is a national test method that measures the gold content in jewelry.
999 is thousands of gold.
999 on the golden steel print refers to the gold content of this gold 99.9%. 999 gold is also called thousands of gold, and it is the highest value named after the national standard. In addition to 999, its steel printing label also includes thousands of gold, GOLD999, G999 and so on.
Due to the high purity of 999 gold, the color is red yellow, and the texture is very soft, it has good ductility, but the plasticity of 999 gold is poor and prone to deformation.
The test method
1, identification
The jewelry marks should contain the manufacturer code, the name and content of the precious metal material.
2, jewelry weight
The gold jewelry is calculated according to the weight and processing fee. The weight of the jewelry is one of the important indicators. The difference is 0.01g.
3, gold content
has many types of gold content testing methods, which can be divided into chemical analysis methods and instrument analysis methods.
The whether the jewelry is damaged according to whether the jewelry is damaged during the testing process can also be divided into non -destructive testing method and damage testing method. The daily inspection of the jewelry quality supervision department is generally based on non -destructive testing method. , Analysis of large instruments such as electronic probes. Market supervision random inspections are mainly due to loss of detection. The fire test method is a national test method that measures the gold content in jewelry.